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Detection Signal Enhancement Method of Array Simultaneously Sending and Receiving Ultrasonic Probes

An ultrasonic detection and detection signal technology, which is applied in the processing of detection response signals, the generation of ultrasonic/sonic/infrasonic waves, and the use of sonic/ultrasonic/infrasonic waves to analyze solids, etc. The effect of increasing the amplitude of the defect signal

Active Publication Date: 2018-07-03
NCS TESTING TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a detection signal enhancement method of an array-type simultaneous transmission and reception ultrasonic probe, which solves the detection signal problem of an array-type simultaneous transmission and reception ultrasonic probe

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  • Detection Signal Enhancement Method of Array Simultaneously Sending and Receiving Ultrasonic Probes
  • Detection Signal Enhancement Method of Array Simultaneously Sending and Receiving Ultrasonic Probes
  • Detection Signal Enhancement Method of Array Simultaneously Sending and Receiving Ultrasonic Probes

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Embodiment Construction

[0024] In order for those skilled in the field of flaw detection to better understand the detection signal enhancement method of the array type co-transmitting and co-receiving ultrasonic probes provided by the present invention, a more complete and clear description will be given below in conjunction with specific embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

[0025] figure 1 It shows the sound field produced by the array type co-transmitting and co-receiving ultrasonic probe 1 provided by the present invention, the sound field includes the main sound field 2 and the sound field 3 of the overlapped part of two adjacent wafers. The chips of the same group of ultrasonic probes 1 have the same specifications and sizes, and the chips of the same group are excited to generate ultrasonic signals at the same time. The characteristics of the ma...

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Abstract

The invention discloses a detection signal enhancement method for array type simultaneous-transmitting simultaneous-receiving ultrasonic probes and belongs to the technical field of ultrasonic inspection.The method includes the steps of firstly, subjecting ultrasonic detection signals of the array type simultaneous-transmitting simultaneous-receiving ultrasonic probes to wavelet threshold process; secondly, subjecting flaw echo signals of two adjacent channels after the wavelet threshold process to linear superposition.By the wavelet threshold process, useful signals can be maintained completely, noises are suppressed, and the signal to noise ratio of the detection signals is increased.Superposition of the flaw echo signals refers to the process of subjecting two signals to the linear superposition by superposition and interference laws of ultrasonic waves so as to enhance flaw signals of the superposition part of a sound field.The detection signal enhancement method has the advantage of detection sensitivity and signal to noise ratio of the superposition part of the sound field generated by the array type simultaneous-transmitting simultaneous-receiving ultrasonic probes are both increased.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic flaw detection, and in particular provides a method for enhancing detection signals of an array-type simultaneous sending and receiving ultrasonic probe. Background technique [0002] In automatic ultrasonic flaw detection, multiple sets of probes are usually staggered and arranged side by side to eliminate detection blind spots and prevent missed detection. This method requires a large number of probes and high detection costs. In order to reduce the number of probes and reduce the cost of testing, an array of simultaneous sending and receiving ultrasonic probes can be used instead of the traditional method of multiple sets of probes interlaced and arranged side by side. This can reduce the number of probes while eliminating the detection blind spot between the probes, and improve detection efficiency. However, the array-type co-sending and co-receiving ultrasonic probe eliminates the detecti...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/44G01N29/34G01N29/24G01N29/04
CPCG01N29/04G01N29/24G01N29/343G01N29/44G01N2291/0289G01N2291/105
Inventor 杨博童凯张建卫刘涛徐磊刘光磊
Owner NCS TESTING TECH
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